Deep learning in mammography images segmentation and classification: Automated CNN approach
Design and performance evaluation of a dispersion compensation unit using several chirping functions in a tanh apodized FBG and comparison with dispersion compensation fiber.
The joint technique achieved the optimum PWRP among all the evaluated techniques and exhibited a remarkable pulse shape; it is less costly than the DCF, but more expensive than the chirped tanh FBG.
Outdoor Visible Light Communication in Intelligent Transportation Systems: Impact of Snow and Rain
A comprehensive study of outdoor visible light communication (VLC) under snow and rain effects has been conducted in this paper. This paper analyzes the expected rain attenuation of Marshal,…
Performance optimization of apodized FBG-based temperature sensors in single and quasi-distributed DWDM systems with new and different apodization profiles
For a single accurate temperature sensor measurement in extensive noisy environment, optimum results are obtained by the Nuttall apodization profile and the new apodized function, which have remarkable SLSR.
Enhanced Spectral Amplitude Coding OCDMA System Utilizing a Single Photodiode Detection
- Somia A. Abd El-Mottaleb, H. Fayed, A. A. El-Aziz, Mohamed Metawee, M. Aly
- PhysicsApplied Sciences
- 10 October 2018
In this paper, the performance of a spectral amplitude coding-optical code division multiple access (SAC-OCDMA) system is investigated utilizing a single photodiode (SPD) detection technique. The…
An enhanced WDM optical communication system using a cascaded fiber Bragg grating
In this paper, a cascaded fiber Bragg grating (FBG) system is proposed to reduce the dispersion in the optical signal in single mode optical fibers. This consequently enhances the system performance,…
Improved VLC-based indoor positioning system using a regression approach with conventional RSS techniques
- Sherine Shawky, M. A. El-Shimy, Z. El-Sahn, M. Rizk, M. Aly
- Engineering13th International Wireless Communications and…
- 1 June 2017
Using the regression method enhances the performance of VLC indoor positioning system using linear and nonlinear least square estimations (LLS & NLS).
A Comprehensive Study on EDFA Characteristics: Temperature Impact
In this paper, a comprehensive study on erbium-doped fiber amplifier (EDFA) characteristics under temperature variation has been performed. The rate and propagation equations that characterize EDFA…
Bandwidth extension of an enhanced SNR with a higher light uniformity of a phosphorescent white LED based visible light communication system
- Monette H. Khadr, H. Fayed, A. A. E. Aziz, M. Aly
- Computer ScienceInternational Symposium on Communication Systems…
- 20 July 2016
This paper increases the bandwidth of a phosphorescent white light emitting diode (LED) employed in an indoor visible light communication (VLC) system. A new distribution pattern for the same number…
Improved light uniformity and SNR employing new LED distribution pattern for indoor applications in VLC system
- Nouran E. Mahfouz, H. Fayed, Ahmed Abd El Aziz, M. Aly
- PhysicsOptical and quantum electronics
- 1 September 2018
A new LED arrangement design using 16 LED array in an indoor VLC system is introduced to increase light uniformity and decrease power and SNR fluctuations across the room without increasing number of LED arrays.